Heney h



(No Model.)

H. H. SGI-IUMANN.

LADDER. No. 319,330 Patented June 2, 1885.

.dttornez s HENRY H. SOHUMANN, OF TROY, PENNSYLVANIA, ASSIGNOR OFONE-THIRD TO CHARLES MUTH, OF SAME PLACE.

LADDER.

SPECIFICATION forming part of Letters Patent No. 319,330, dated June 2,1885.

Application filed March 23, 1885. (No model.)

To all whom it may concern-.-

Be it known that I, HENRY H. SCHUMANN, a citizen of the United States,residing at Troy, in the county of Bradford and State of Pennsylvania,have invented a new and useful Improvement in Ladders, of which thefollowing is a specification, reference being had to the accompanyingdrawings.

My invention relates to a jointed or seetional ladder; and it has forits object to provide improved means for connecting the meeting ends ofthe sections which shall be simple in their construction, strong anddurable,

light, and readily connected or disconnected, when desired.

With these ends in view the invention consists in the improvedconstruction and combinations of parts hereinafter fully described, andpointed out in the claims.

In the drawings, Figure 1 is a side elevation of a sufficient portion ofa ladder to illustrate my invention. Fig. 2 is a front elevation. Fig. 3is a horizontal section. Fig. 4 is a side elevation taken on the innerside of the ladder, and Fig. 5 is a detail view of the connectingplatesdetached.

In the accompanying drawings, in which like letters of referenceindicate corresponding parts in all the figures, A A represent the 0meeting sides of the ladder, each of which is composed of two strips, aa, the strip a 6X tending a considerable distance beyond the strip a,the latter strip being recessed or cut away at b. It will be seen,however, that, if

desired, said sides might be of a single strip of material, and berecessed. to form the extended portions, and also provided with therecesses b. In case two strips are employed to form one of the sides ofa section of the 0 ladder the said strips are bolted together. Holes oropenings are made at suitable points upon the sides of the sections forthe reception of rungs c.

It will be seen that by recessing or cutting away the meeting ends ofthe sides, when said sides are lapped and secured together, a smoothjoint will be formed.

B represents a dovetailed metal plate secured to the inner side of stripa of section A,

and having its upper end projected beyond the upper end of said strip.Its lower end is formed with a wedge-shaped extension, 0, which isadapted to fit the recess 6 in section A, and be secured therein byscrews or equivalent fastening. The plate B is formed with 5 5 ashoulder, D,which is adapted to fit and bear against the upper end ofstrip a, and said shoulder is formed with a recess, 01.

B represents a plate secured to the strip a of section A. The said plateB is provided with a dovetailed slot to receive the plate B, and has atits end a cross-strip, 6, having a tongue, 0, to fit the recess d in theshoulder of plate B. The plate B is provided with a wedge-shapedextension, 0, which fits between the strips a a of side A, and is alsoformed with a shoulder, D, having a recess, (1, to receive the projectedend of the plate B. A hook, E, is pivoted to the side A, and is adaptedto engage an eye on side A, and. thus securely hold said sides together.

By the construction shown and described the meeting ends of a ladder maybe firmly and securely held together, and all movement will beprevented.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination, in a sectional ladder, of the sides having reducedmeeting ends, and plates secured to said ends, one of said plates havinga dovetailed flange, while the other is provided with a dovetailed slotto receive the same, substantially as set forth.

2. The combination, in a sectional ladder, of the sides having reducedmeeting ends, plates having wedges to fit recesses in said sides,shoulders having recesses, and tongues to fit said recesses, and meansfor holding said sides against vertical draft, as set forth.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in presence of two witnesses.

HENRY H. SOHUMANN.

Witnesses:

L. H. OLIVER, WM. MONAMARA.

